Review article

The article discusses the issues associated with corrosion resistance of steel wire prestressed reinforcement bars of railway switches from slag-alkaline concrete during thirty years of operation. The assessment of the state of reinforcement and factors affecting the possible development of corrosion, such as dynamics of alkali binding, the composition of passivating films and the adjacent layer of concrete, microstructural analysis of reinforcement has been implemented. The conducted research allows coming to conclusion about high corrosion resistance of reinforcement in the considered constructions from slag-alkaline concretes.